CN114112287B - Clamping mechanism for clamping and replacing membrane - Google Patents
Clamping mechanism for clamping and replacing membrane Download PDFInfo
- Publication number
- CN114112287B CN114112287B CN202111496256.2A CN202111496256A CN114112287B CN 114112287 B CN114112287 B CN 114112287B CN 202111496256 A CN202111496256 A CN 202111496256A CN 114112287 B CN114112287 B CN 114112287B
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- clamping mechanism
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- support seat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Actuator (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The clamping mechanism for clamping and replacing the membrane adopts a split type structural design and comprises a driving section clamping mechanism, a driven section clamping mechanism and a membrane replacing mechanism, wherein the driving section clamping mechanism, the driven section clamping mechanism and the membrane replacing mechanism are sequentially designed from left to right; the driving section clamping mechanism can realize axial feeding of the pipeline and axial displacement of the whole supporting seat, the driven section clamping mechanism realizes axial position fixation of the butt joint pipeline, the diaphragm replacing mechanism realizes clamping and replacement of the diaphragm between the two pipelines, and the three mechanisms cooperate to realize reliable sealing and clamping between the driving section, the diaphragm and the driven section and ensure safety and reliability of the whole test pipeline. In the driving mode of each degree of freedom, the structure is simple, the installation and the debugging are convenient, the effective adjustment of the displacement between the pipeline and the diaphragm is ensured, and the space utilization rate is fully improved. The design of the structural form ensures that all mechanisms are relatively independent, the interference between the mechanisms is less, the structure is simple, the operation is convenient, and the efficiency is high.
Description
Technical Field
The invention relates to the field of cavity engineering, and is suitable for a mechanism for reliably clamping and loosening films with different thicknesses under different test environments.
Background
At present, the cavity body is widely applied to tests of various flight models. In the cavity, the different sections of the equipment are separated by using the diaphragms, the sections are connected through the diaphragm clamping mechanism, and the diaphragms with different thicknesses are clamped through the clamping mechanism so as to meet the test requirements.
Most of the existing clamping mechanisms adopt flange type film clamping mechanisms, hydraulic film clamping mechanisms, full-thread film clamping mechanisms, broken thread film clamping mechanisms and the like. The hydraulic membrane clamping mechanism takes a part of a pipe section as a piston in a hydraulic cylinder, realizes clamping and loosening of a membrane by adjusting the pressure difference in the piston, has the advantages of simple device and large clamping force, but has larger mechanism size, high manufacturing cost and maintenance cost, and simultaneously, the sealing area is relatively larger due to larger size, once the sealing part is locally damaged or worn, the whole sealing is invalid, the pressure difference in the piston is reduced, the membrane is unreliable to clamp, and the potential safety hazard is large. In addition, the sealing failure also brings problems of hydraulic oil leakage and environmental pollution. The full-thread membrane clamping mechanism and the broken thread membrane clamping mechanism have the advantages of compact structure and high connection rigidity, but due to the adoption of threaded connection, inconvenient conditions exist in the use and operation of the mechanism, the time required for replacing the membrane is long, and the test efficiency is reduced. Therefore, due to the defects of the prior art, development of a novel clamping mechanism which is simple and convenient to operate, safe and reliable is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the clamping mechanism for clamping and replacing the diaphragm, which has the advantages of simple structure, convenient operation and reliable installation.
The aim of the invention can be achieved by the following technical measures:
the clamping mechanism for clamping and replacing the diaphragm comprises a driving section clamping mechanism, a driven section clamping mechanism and a diaphragm replacing mechanism, wherein the driving section clamping mechanism, the driven section clamping mechanism and the diaphragm replacing mechanism are sequentially arranged from left to right;
a. the driving section clamping mechanism comprises a linear guide rail I, a plurality of groups of sliding blocks, a driving support seat lower part, a driving support seat upper part, a driving support seat lower part, a locking nut, a driving pipeline and a gear ring, wherein the front end and the rear end of the bottom of the driving section clamping mechanism are respectively arranged on a foundation through a linear guide rail I which is transversely arranged, the driving support seat lower part is fixedly connected with the driving support seat lower part through a fixed connecting piece, the driving support seat upper part and the driving support seat lower part form an integral driving support seat, the locking nut is positioned in a shaft hole in the middle part of the driving support seat and can rotate circumferentially, the right end of the driving support seat is combined with the locking nut through external threads, the driving pipeline is fixedly connected with a disc flange at the left end of the driving pipeline, and the gear ring is fixedly connected with the outer circle of the locking nut; the gear ring is meshed with a roller driven by a power source to drive the locking nut to circumferentially rotate; two groups of shaft holes which are parallel to the axis of the middle shaft hole and provided with guide posts are respectively arranged above and below the middle shaft hole of the driving support seat, and the right extension end of the guide posts is combined with the support seat of the driven section;
b. the driven section clamping mechanism comprises a driven section supporting seat fixedly connected with the foundation through a connecting piece, a driven pipeline fixedly connected with a shaft hole in the middle of the driven section supporting seat, a clamping driving mechanism is respectively arranged in through holes processed at four corners of the driven section supporting seat, and the left end of the clamping driving mechanism is fixedly connected with the upper part of the driving supporting seat and the lower part of the driving supporting seat through connecting flanges; a disc spring set is arranged at the joint end of the guide post and the driven section supporting seat and penetrates through the mounting and positioning end face of the driven section supporting seat, and a locking flange is arranged at the outer end of the disc spring set to ensure the close fit between the disc spring set and the guide post;
c. the diaphragm replacing mechanism comprises a supporting top plate which is arranged on a foundation through a fixed supporting component; an axial driving mechanism is arranged on the supporting top plate, one end of the axial driving mechanism is connected with the mounting seat through a shaft pin, two sides of the top surface of the supporting top plate are uniformly provided with a linear guide rail II and a sliding block group matched with the linear guide rail II, and two ends of the linear guide rail II are symmetrically provided with limiting blocks; the sliding block set is connected with a membrane clamping supporting ring through screws, the other end of the axial driving mechanism is fixedly connected with the membrane clamping supporting ring through a connecting seat, the membrane clamping ring is placed on the membrane clamping supporting ring according to own scribing, and the membrane clamping ring axially moves along the linear guide rail II under the action of the axial driving mechanism, four positioning shaft pins are uniformly distributed on the membrane clamping ring along the circumference, and the membrane is fastened in the membrane clamping ring.
The power source comprises a motor arranged on a motor seat, a speed reducer connected with an output shaft of the motor, and a roller arranged on the output shaft of the speed reducer and meshed with a gear ring for transmission; the motor base is fixedly connected with the driving support base through screws.
The fixed supporting component comprises a plurality of groups of supporting rods, the upper ends of the supporting rods are fixedly connected with the bottom surface of the supporting top plate, and the lower ends of the supporting rods are fixedly connected with the mounting base through high-strength bolts; the mounting base is fixedly connected to the foundation through a connecting piece.
The lower part of the driving support seat and the upper part of the driving support seat are formed by symmetrically and separately casting, the driven section support seat is formed by integrally casting, and the structure is provided with a shape reducing hole and a reinforcing rib, so that the overall rigidity and stability of the structure are enhanced.
The locking nut and the driving pipeline are both formed by precision machining, are meshed with each other through internal and external threads, and the thread length can be designed according to the required axial displacement.
The driving combination mode of the gear ring and the roller wheel can adopt the structure mode of a chain wheel according to the space condition.
The clamping driving mechanism is selected according to the required clamping force, and a hydraulic cylinder or an electric cylinder can be adopted.
The number of the disc spring groups arranged at one end of the guide post can be correspondingly increased or decreased according to the stroke required by clamping.
The axial driving mechanism is a hydraulic cylinder, an electric cylinder or a servo electric push rod.
The lock nut is provided with an internal thread, and a plurality of grooves for storing lubricating grease are formed in the outside of the lock nut.
The working principle and the beneficial effects of the invention are as follows:
when the mechanism is installed, firstly, the lock nut is assembled with the sliding table of the driving support seat through the self lubrication groove, and the position relationship between the lock nut and the driving support seat in the rotation process is ensured through high-strength bolt connection. And then screwing the driving pipeline into the flange end of the sealing disc of the driving pipeline along the axis of the locking nut in a threaded engagement manner, and further fixedly connecting the other end of the driving pipeline with the connecting flange through a high-strength bolt. Four groups of sliding blocks are respectively arranged on two sides of the lower end of the driving support seat, and eight groups of sliding blocks can ensure that the driving support seat drives the driving pipeline to integrally move along the axial direction under the action of driving force. Meanwhile, a guide post flange and a mounting interface of a hydraulic cylinder flange are arranged on the driving support seat. After four groups of guide posts pass through the mounting holes on the driven support seat, a set of disc spring sets are respectively mounted along the guide posts, the disc spring sets are formed by combining 16 disc springs in a superposition and involution mode, and the locking flange is fixedly connected with the tail end of the guide post through bolts, so that the disc spring sets are guaranteed to be mounted in place and have enough elastic support end faces when axially displaced. The mounting flange of the clamping driving mechanism formed by four groups of hydraulic cylinders is fixedly connected with the driven supporting seat through a high-strength bolt, and the front end of the mounting flange is fixedly connected with the driving supporting seat through a connecting flange. When the hydraulic cylinder works, the four groups of hydraulic cylinders are in a closed state, and the disc spring group is in a compressed state, so that a certain deformation is generated. At this time, a fixed distance is formed between the driving support seat and the driven support seat. The lock nut rotates circumferentially under the action of the gear ring and rack driving mechanism, and the driving pipeline meshed with the lock nut moves to a proper position from the front end of the butt joint pipeline along the axial direction. According to the requirement condition of the diaphragm, the diaphragm meeting the requirement is installed on the diaphragm clamping ring, the diaphragm clamping ring is fixed in position through the positioning shaft pin, and then the diaphragm clamping supporting seat on the diaphragm replacing mechanism drives the diaphragm clamping ring to move to the concentric position of the driving pipeline and the driven pipeline under the action of driving force. After the diaphragm is in place, the four groups of hydraulic cylinders discharge oil and release pressure, the diaphragm is clamped under the elastic deformation force of the disc spring group, and the clamping reliability and safety of the diaphragm in the test are ensured. After the work is finished, a driving mechanism in the membrane replacing mechanism moves the membrane clamping supporting seat to the outer side of the mechanism, and after a new membrane is manually replaced on the membrane clamping ring, the test can be continued according to the original working mode.
The mechanism designed by the invention adopts the design with simple structure and convenient installation and debugging, not only can effectively meet the working environment required by the test, but also can ensure the compactness among links and fully improve the space utilization rate and the safety. Meanwhile, in the driving mode of each degree of freedom, a mature and stable driving mode is adopted. The design of the structural form ensures that all mechanisms are relatively independent, the interference among the mechanisms is less, the structure is simple, the operation is convenient and safe, the work is reliable, and the maintenance cost is low.
Drawings
Fig. 1 is a perspective assembly view (left direction) of the present invention.
Fig. 2 is a perspective assembly view (right direction) of the present invention.
Fig. 3 is a front view of the present invention.
Fig. 4 is a top view of the present invention.
Fig. 5 is a perspective view of the drive conduit.
Fig. 6 is a perspective view of the upper portion of the drive support base.
Fig. 7 is a perspective view of the lower portion of the drive support base.
Fig. 8 is a perspective view of the driven section support base.
Fig. 9 is a perspective view of the lock nut.
Fig. 10 is a perspective view of a guide post.
Fig. 11 is a cross-sectional view of a guide post, disc spring set.
Fig. 12 is a front view of the diaphragm changing mechanism.
Fig. 13 is a partial enlarged view of the axial drive mechanism 23, the shaft pin 24, and the mount 25.
Fig. 14 is a perspective view of a clamp ring.
Number in the figure: the device comprises a driving section clamping mechanism 1, a driven section clamping mechanism 2, a diaphragm replacing mechanism 3, a linear guide rail I4, a foundation 5, a driving support seat lower part 6, a driving support seat upper part 7, a locking nut 8, a driving pipeline 9, a disc flange 10, a gear ring 11, a roller 12, a motor seat 13, a guide post 14, a driven section support seat 15, a driven pipeline 16, a clamping driving mechanism 17, a connecting flange 18, a disc spring group 19, a locking flange 20, a mounting base 21, a supporting rod 22, a supporting top plate 23, an axial driving mechanism 24, a shaft pin 25, a shaft pin 26, a mounting seat 27, a linear guide rail II, a limiting block 28, a membrane clamping support seat 29, a connecting seat 30, a membrane clamping ring 31, a positioning shaft pin 32 and a diaphragm 33.
Description of the embodiments
The invention will be further described with reference to the following examples (drawings):
as shown in fig. 1, 2, 3 and 4, the clamping mechanism for clamping and replacing the diaphragm of the present invention comprises a driving section clamping mechanism 1, a driven section clamping mechanism 2 and a diaphragm replacing mechanism 3 located between the driving section clamping mechanism 1 and the driven section clamping mechanism 2, which are arranged in sequence from left to right;
a. the driving section clamping mechanism 1 comprises a driving support seat lower part 6, a driving support seat upper part 7 and a driving support seat lower part 7 which are respectively arranged on a foundation 5 through a linear guide rail I4 and a plurality of groups of sliding blocks which are transversely arranged at the front end and the rear end of the bottom, wherein the driving support seat upper part 7 and the driving support seat lower part 7 are fixedly connected through a fixed connecting piece, the driving support seat upper part and the driving support seat lower part 7 form an integral driving support seat (see fig. 6 and 7), a locking nut 8 (see fig. 9) which is positioned in a shaft hole in the middle part of the driving support seat and can circumferentially rotate, a driving pipeline 9 of a disc flange 10 is fixedly connected at the left end of the driving support seat through external threads, and a gear ring 11 fixedly connected with the excircle of the locking nut; the gear ring 11 is meshed with a roller 12 driven by a power source to drive the lock nut to circumferentially rotate; two groups of shaft holes which are parallel to the axis of the middle shaft hole and provided with guide posts 14 (see figure 10) are respectively arranged above and below the middle shaft hole at the upper part of the driving support seat and the lower part of the driving support seat, and the right extending end of the guide posts 14 is combined with a driven section support seat 15;
b. the driven section clamping mechanism 2 comprises a driven section supporting seat 15 (see fig. 8) fixedly connected with the foundation 5 through a connecting piece, a driven pipeline 16 fixedly connected with a shaft hole in the middle of the driven section supporting seat, a clamping driving mechanism 17 is respectively arranged in through holes processed at four corners of the driven section supporting seat 15, and the left end of the clamping driving mechanism 17 is fixedly connected with the upper part 7 of the driving supporting seat and the lower part 6 of the driving supporting seat through a connecting flange 18; a disc spring set 19 (see fig. 11) is arranged at the joint end of the guide post 14 and the driven section supporting seat 15 and penetrates through the installation positioning end surface of the driven section supporting seat, and a locking flange 20 is arranged at the outer end of the disc spring set to ensure the close fit between the disc spring set and the guide post;
c. the diaphragm replacing mechanism 3 comprises a supporting top plate 23 which is arranged on the foundation 5 through a fixed supporting component; an axial driving mechanism 24 is arranged on the supporting top plate 23, one end of the axial driving mechanism 24 is connected with a mounting seat 26 through a shaft pin 25, two sides of the top surface of the supporting top plate 23 are uniformly provided with a linear guide II 27 and a sliding block group matched with the linear guide II, and two ends of the linear guide II are symmetrically provided with limiting blocks 28; the sliding block set is connected with a film clamping support seat 29 through a screw, the other end of the axial driving mechanism is fixedly connected with the film clamping support seat 29 through a connecting seat 30, a film clamping ring 31 is placed on the film clamping support ring according to own scribing, and moves axially along a linear guide rail II under the action of the axial driving mechanism 24, four positioning shaft pins 32 are uniformly distributed on the film clamping ring along the circumference, and a film 33 is fastened in the film clamping ring (see fig. 12, 13 and 14).
The power source comprises a motor arranged on a motor seat 13, a speed reducer connected with an output shaft of the motor, and a roller 12 arranged on the output shaft of the speed reducer and meshed with a gear ring for transmission; the motor base is fixedly connected with the lower part of the driving support base through screws.
The fixed supporting component comprises a plurality of groups of supporting rods 22, the upper ends of which are fixedly connected with the bottom surface of the supporting top plate 23, and the lower ends of which are fixedly connected with the mounting base 21 (through high-strength bolts); the mounting base 21 is fixedly connected to the foundation 5 through a connecting piece.
The lower part 6 of the driving support seat and the upper part 7 of the driving support seat are formed by symmetrically and separately casting, the driven section support seat 15 is formed by integrally casting, and the structure is designed with a shape reducing hole and a reinforcing rib, so that the integral rigidity and stability of the structure are enhanced.
The locking nut 8 and the driving pipeline 9 are all formed by precision machining, are meshed with each other through internal and external threads, and the thread length can be designed according to the required axial displacement.
The driving combination mode of the gear ring 11 and the roller 13 can adopt the structure mode of a chain wheel according to the space condition.
The clamping driving mechanism 17 is selected according to the required clamping force, and a hydraulic cylinder or an electric cylinder can be adopted.
The number of disc spring sets mounted at one end of the guide post 14 can be increased or decreased accordingly depending on the stroke required for clamping.
The axial driving mechanism 24 is a hydraulic cylinder, an electric cylinder or a servo electric push rod.
The lock nut 8 is provided with an internal thread and a plurality of grooves for storing lubricating grease are formed on the outside (see fig. 9).
Claims (10)
1. A fixture for clamping and replacing a diaphragm, characterized by: the device comprises a driving section clamping mechanism (1), a driven section clamping mechanism (2) and a diaphragm replacing mechanism (3) which are sequentially arranged from left to right, wherein the diaphragm replacing mechanism is positioned between the driving section clamping mechanism (1) and the driven section clamping mechanism (2);
a. the driving section clamping mechanism comprises a linear guide rail I (4) which is transversely arranged at the front end and the rear end of the bottom, a plurality of groups of sliding blocks, a driving support seat lower part (6) which is arranged on a foundation (5), a driving support seat upper part (7) and the driving support seat lower part (6) are fixedly connected through a fixed connecting piece, an integral driving support seat is formed by the driving support seat upper part (7) and the driving support seat lower part (6), a locking nut (8) which is positioned in a shaft hole in the middle part of the driving support seat and can rotate circumferentially, a driving pipeline (9) which is combined with the locking nut (8) through external threads is arranged at the right end, and a disc flange (10) is fixedly connected to the left end of the driving pipeline, and a gear ring (11) which is fixedly connected to the outer circle of the locking nut; the gear ring (11) is meshed with a roller (12) driven by a power source to drive the locking nut (8) to rotate circumferentially; two groups of shaft holes which are parallel to the axis of the middle shaft hole and provided with guide posts (14) are respectively arranged above and below the middle shaft holes of the upper part (7) and the lower part (6) of the driving support seat, and the right extending ends of the guide posts are combined with the driven section support seat (15);
b. the driven section clamping mechanism comprises a driven section supporting seat (15) fixedly connected with the foundation (5) through a connecting piece, a driven pipeline (16) fixedly connected with a shaft hole in the middle of the driven section supporting seat, a clamping driving mechanism (17) is respectively arranged in through holes machined in four corners of the driven section supporting seat (15), and the left end of the clamping driving mechanism is fixedly connected with the upper part (7) of the driving supporting seat and the lower part (6) of the driving supporting seat through a connecting flange (18) respectively; a disc spring set (19) is arranged at the joint end of the guide post (14) and the driven section supporting seat (15) and penetrates through the installation positioning end face of the driven section supporting seat, and a locking flange (20) is arranged at the outer end of the disc spring set to ensure the tight fit between the disc spring set (19) and the guide post (14);
c. the diaphragm replacement mechanism comprises a supporting top plate (23) which is arranged on a foundation (5) through a fixed supporting component; an axial driving mechanism (24) is arranged on the supporting top plate, one end of the axial driving mechanism is connected with a mounting seat (26) through a shaft pin (25), two sides of the top surface of the supporting top plate (23) are uniformly provided with a linear guide rail II (27) and a sliding block group matched with the linear guide rail II, and two ends of the linear guide rail II are symmetrically provided with limiting blocks (28); the sliding block group is connected with a film clamping supporting ring (29) through screws, the other end of the axial driving mechanism (24) is fixedly connected with the film clamping supporting ring (29) through a connecting seat (30), a film clamping ring (31) is placed on the film clamping supporting ring (29) according to own scribing, the film clamping ring moves axially along a linear guide rail II (27) under the action of the axial driving mechanism (24), four positioning shaft pins (32) are uniformly distributed on the film clamping ring along the circumference, and a film (33) is fastened in the film clamping ring.
2. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the power source comprises a motor arranged on a motor seat (13), a speed reducer connected with an output shaft of the motor, and a roller (12) arranged on the output shaft of the speed reducer and meshed with the gear ring for transmission; the motor base is fixedly connected with the driving support base through screws.
3. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the fixed support component comprises a plurality of groups of support rods (22) of which the upper ends are fixedly connected with the bottom surface of the support top plate (23) and the lower ends are fixedly connected with the mounting base (21) through high-strength bolts; the mounting base (21) is fixedly connected to the foundation (5) through a connecting piece.
4. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the lower part (6) of the driving support seat and the upper part (7) of the driving support seat are formed by symmetrically and separately casting, the driven section support seat (15) is formed by integrally casting, and the structure is provided with a shape-reducing hole and a reinforcing rib, so that the overall rigidity and stability of the structure are enhanced.
5. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the locking nut (8) and the driving pipeline (9) are formed by precision machining, are meshed with each other through internal and external threads, and the thread length can be designed according to the required axial displacement.
6. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the driving combination mode of the gear ring (11) and the roller (12) can adopt the structure form of a chain wheel according to the space condition.
7. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the clamping driving mechanism (17) is selected according to the required clamping force, and a hydraulic cylinder or an electric cylinder can be adopted.
8. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the number of disc spring groups (19) arranged at one end of the guide post (14) can be correspondingly increased or decreased according to the stroke required by clamping.
9. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the axial driving mechanism (24) is a hydraulic cylinder, an electric cylinder or a servo electric push rod.
10. The clamping mechanism for membrane clamping and replacement as recited in claim 1 wherein: the locking nut (8) is provided with an internal thread, and a plurality of grooves for storing lubricating grease are formed in the outer portion of the locking nut.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021112465245 | 2021-10-26 | ||
| CN202111246524 | 2021-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114112287A CN114112287A (en) | 2022-03-01 |
| CN114112287B true CN114112287B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111496256.2A Active CN114112287B (en) | 2021-10-26 | 2021-12-09 | Clamping mechanism for clamping and replacing membrane |
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| CN (1) | CN114112287B (en) |
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| DE4432651A1 (en) * | 1994-09-14 | 1996-03-21 | Magdeburger Armaturenwerke | Diaphragm drive with housing secured to radial outer section of diaphragm |
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| CN110779677A (en) * | 2019-12-04 | 2020-02-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | End face driving film clamping device |
| CN211978279U (en) * | 2020-06-12 | 2020-11-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Screw temperature control film clamping device |
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| DE4432651A1 (en) * | 1994-09-14 | 1996-03-21 | Magdeburger Armaturenwerke | Diaphragm drive with housing secured to radial outer section of diaphragm |
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| CN113092054A (en) * | 2021-04-19 | 2021-07-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel metal diaphragm clamping device |
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| CN114112287A (en) | 2022-03-01 |
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